The rise of elephant and rhino poaching in Africa is pushing both mammals to the brink of extinction. In early October, close to one thousand people marched from Saint Mary’s Square to Union Square in San Francisco, protesting the ivory and rhino horn trades.

Benito Santiago, 63, is one of an increasing number of seniors facing rising rents and eviction under the Ellis Act — a state law that enables speculators to buy property hoping to flip it into an easy profit.